§ BIOTECHNOLOGY
USD · BiotechnologyPBYI
PUMA BIOTECHNOLOGY INC
USDSector · Biotechnology
§ 01 · PRICE
Price action
1D5D1M6MYTD1YMAX
§ 03 · SIGNAL STACK · WHAT THE INPUTS SAY
§ 05 · WHO OWNS IT
Top institutional holders
| Fund | Shares | % port | Δ Q/Q |
|---|---|---|---|
| ACORN CAPITAL ADVISORS, LLC | 4.1M | 7.5% | ±0% |
| Renaissance Technologies | 1.9M | 0.0% | −9% |
| AMERICAN CENTURY COMPANIES INC | 1.9M | 0.0% | +16% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.8M | 0.0% | n/a |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.8M | 0.0% | n/a |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.7M | 0.0% | n/a |
◇ AC INTELLIGENCE
Top institutional owners for PBYI as of the most recent 13F reporting period (Q1 2026 · Period ended Mar 31). Δ Q/Q reflects share-count change vs. the prior filing — positive green means adding, negative red means trimming. Cross-reference with the ownership-mix bars below to see which strategy cohort is driving the flow.
§ 06 · WHO OWNS IT · BY STRATEGY
OTHER21.8% · 0 holders
OTHER42.2% · 109 holders
PASSIVE / INDEX9.9% · 8 holders
QUALITY / COMPOUNDER8.6% · 10 holders
DEALER / BANK7.5% · 17 holders
SYSTEMATIC / QUANT4.9% · 4 holders
TACTICAL / MACRO3.0% · 2 holders
INCOME / DEFENSIVE1.5% · 7 holders
ACTIVIST0.7% · 1 holder
◇ AC INTELLIGENCE
Ownership mix by behavioral cohort. Top bars indicate which style of capital dominates the float — passive indexing, quality compounders, dealer/bank, systematic quant, etc. Big quality-compounder share means concentrated active conviction; heavy passive share means flows are dictated by index rebalances, not fundamentals.
§ 07 · INSIDER ACTIVITY · LAST 180 DAYS
NO INSIDER FILINGS
◇ AC INTELLIGENCE
No Form 4 filings on record for PBYI in the last 180 days.
§ 08 · COVERAGE · OUR RECENT NOTES
No notes mention PBYI yet.